Eotary movement



No. 25,132. PATENTED AUG. 16, 1859.

W. H. MITCHELL.

ROTARY MOVEMENT.

UNITED STATES PATENT GFFICE,

WILLIAM HOWARD MITCHELL, OF SAN FRANGISGO, CALIFORNIA.

ROTARY MOVEMENT.

Specification of Letters Patent No. 25,132, dated August 16, 1859'.

To all whom it may concern Be it known that I, WVM. H. MITGHELL, of SanFrancisco, in the county of San Francisco and State of California, haveinvented a new and useful Improvement in the Method of ConvertingReciprocating into Rotary Motion; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexed drawing, forming part of this specification, inthe several figures of which similar characters of reference denote thesame part.

Figure 1 is a side elevation of my arrangement for convertingreciprocating into rotary motion. Fig. 2 is a vertical section of same.

This invention has for its object producing rotary motion by means of avertical, or horizontal reciprocating movement, and its nature consistsin a certain combination of devices to effect that purpose.

The details of construction and operation are as follows.

In the drawing A, represents the frame, across which is shaft H, havingon. it a ratchet wheel R, with a flanged casing E, on each side, betweenthese flanges on each side of the periphery of the ratchet wheel are twoinclined reversed pawls or catches P, and P, jointed to flanges E, bypins h, h, and also attached to two horizontally moving arms G,connected by bar B; to the center of which is attached the shaft S, towhich the power is applied for the movement of the said arms G. F, is apinion also on shaft H. So that the power being applied to shaft S, thehorizontal movement of arms G is produced and in their movement one orthe other of the pawls P, or P, constantly coming in contact with theteeth of ratchet wheel R, and being reversed and self detaching causethe constant rotary movement of said ratchet wheel R, and consequentlythat of shaft H, and pinion F, thus accomplishing the desired object.

I do not claim the ratchet wheel and pawl for the purpose of producing arotary movement, as that is in common use.

What I claim is,

1. Two or more reversed, self detaching pawls or catches working onopposite sides of the periphery of the ratchet wheel by being attachedto arms working in parallel lines and in the same direction, constructedand operating substantially as, and for the purpose specified.

2. I also claim the combination of the ratchet wheel R, with the pawlsor catches P, and P, and flanges E and the cross beam B, with parallelarms G, substantially for the uses, and purposes set forth.

3. I also claim the combination of the ratchet wheel, with the flangedcasing or flanges.

In testimony whereof I have hereunto signed my name before twosubscribing witnesses.

WM. HOWARD MITCHELL. Vitnesses:

GEO. PATTEN, G. W. RISDON.

